Some common side effects of this medication are: Dizziness, Nervousness, Mild headache, Trouble sleeping, Nausea, Sweating, Loss of appetite, Dry mouth, Anxiety, Blurred vision If any of these effects start to be bothersome, then consult your doctor right away. To avoid getting dizzy or lightheaded, rise from your sitting or lying position very slowly. To get rid of dry mouth you can chew a piece of gum, suck on a lollipop, or drink water. Make sure that the gum and lollipop are sugarless. Notify your doctor right away if you experience any of the following side effects: Rapid or pounding or irregular heartbeat, Stomach pain, Chest pain, Sudden and severe headache, Stiff neck, Confusion, Disorientation, Slurred speech, Behavioral changes, Fever, Skin rash Keep in mind that your doctor has advised you this medicine as its benefits outweigh the side effects.